CN101413588B - Non-seepage drive seal device - Google Patents
Non-seepage drive seal device Download PDFInfo
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- CN101413588B CN101413588B CN2008102345947A CN200810234594A CN101413588B CN 101413588 B CN101413588 B CN 101413588B CN 2008102345947 A CN2008102345947 A CN 2008102345947A CN 200810234594 A CN200810234594 A CN 200810234594A CN 101413588 B CN101413588 B CN 101413588B
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- bearing
- gland
- oil
- casing
- pressing cover
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- Sealing Of Bearings (AREA)
Abstract
The invention relates to a no-leakage transmission sealing device, comprising a mainshaft, a pressing cover, a bearing and a box body; the mainshaft which is sheathed by a shaft sleeve is supported on the box body by the bearing; the pressing cover passes through the mainshaft and presses tightly on the box body; a chamber between the pressing cover and the bearing is internally provided with a fixed moment ring; the mainshaft is sheathed by a disc-shaped oil seal sleeve; the end surface of the pressing cover hermetically presses tightly on the fixed moment ring by an oil retaining ring whichhas a T-shaped section; the internal hole of the pressing cover is hermetically connected with the disc-shaped oil seal sleeve by a labyrinth-typed oil retaining ring, thus preventing the working medium leaked out of the bearing from directly acting on the sealing position, thereby leading to leakage not easy to occur; a loop is arranged between the pressing cover and the box body so as to lead the working medium leaked out of the bearing to flow back into the box body; the no-leakage transmission sealing device has simple structure, good sealing effect, reduces the loss of the working medium, lowers the cost, has long service life and can be widely applied to the all mechanical sealing situations.
Description
Technical field
The present invention relates to shaft sealer, is a kind of non-seepage drive seal device specifically.
Background technique
Mechanical seal is widely used in fluid machinery and the dynamic power machine as the main sealing means of gear train shaft.Adopt bolt to compress the gland seal structure that includes oil sealing in the traditional mechanical sealing, oil sealing directly is enclosed within on the cylindrical of transmission shaft, friction heating and wearing and tearing between oil sealing and the transmission shaft, and it is aging to quicken oil sealing, shortens oil sealing working life and easy to leak.The patent No. is the sealing configuration of a kind of transmission shaft of 03210245.3, and its oil sealing directly is enclosed within the transmission shaft cylindrical, and wearing and tearing and heating that the contact type motive sealing exists are easy to cause seepage.
Summary of the invention
In order to solve the deficiencies in the prior art, the purpose of this invention is to provide the hermetically sealed non-seepage drive seal device of a kind of simple in structure, long service life, good sealing effect.
In order to reach above purpose, the technical solution used in the present invention is: a kind of non-seepage drive seal device comprises main shaft, bearing, gland, casing, the main shaft that is with axle sleeve is bearing on the casing through bearing, gland passes main shaft and compresses casing, be provided with in the cavity between gland and bearing and decide the square ring, be with oil-sealing sleeve on the main shaft, technical characteristics is that described gland end face is "T"-shaped flinger ring through the cross section and decide the square ring and compress sealing, aperture mazy type flinger ring and oil-sealing sleeve are tightly connected in the gland, are provided with the loop between described gland and casing.
The technical solution used in the present invention also comprises: described "T"-shaped flinger ring and axle sleeve Spielpassung; Described oil sealing is dish-shaped oil-sealing sleeve, dish-shaped oil-sealing sleeve and main shaft interference fit; Described loop is included in and is drilled with oilhole on the gland, is drilled with oilhole on casing, and the gland upper oil hole is communicated with the formation loop with the casing upper oil hole.
Adopt above technological scheme, the gland end face is "T"-shaped flinger ring through the cross section and decide the square ring and compress and be sealed on the casing, cavity between gland and bearing is divided into inner chamber and exocoel, the cross section is that "T"-shaped flinger ring and axle sleeve Spielpassung intercepts a large amount of lubricant oil or working medium in being provided with the inner chamber of deciding the square ring, avoids whole lubricant oil or working medium to directly act on sealing part; Less amount of lubrication oil or working medium are that T-shape flinger ring and axle sleeve gap flow into exocoel through the cross section, the gland that employing is pressed on the casing is enclosed within the mode that the dish-shaped oil-sealing sleeve on the main shaft is tightly connected through mazy type flinger ring and interference fit, less amount of lubrication oil or working medium are sealed in the exocoel fully, do not have and reveal, realize hermetically sealed effect; Be provided with the loop between gland and casing, centrifugal action when rotated by dish-shaped oil-sealing sleeve, the less amount of lubrication oil or the working medium that flow into exocoel flow back to casing through the loop, reduce the loss of lubricant oil or working medium.The present invention is simple in structure, and is hermetically sealed effective, reduces the loss of working medium, reduces cost, and increases the service life, and is widely used in various mechanical seal occasions.
Description of drawings
Fig. 1 is a sectional view of the present invention;
Fig. 2 is the schematic representation of conventional seals structure.
Among the figure, main shaft 1, oil-sealing sleeve 2, mazy type flinger ring 3, gland 4, flinger ring 5 is decided square ring 6, axle sleeve 7, bearing 8, casing 9, oilhole 10,101, inner chamber 11, exocoel 111, outside framework oil seal 12.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Non-seepage drive seal device shown in Figure 1, comprise main shaft 1, gland 4, bearing 8, casing 9, axle sleeve 6, bearing 8 is placed in main shaft 1 cylindrical, main shaft 1 is bearing on the casing 9 through bearing 8, gland 4 passes main shaft 1 and compresses casing, be provided with in the cavity between gland and bearing and decide square ring 6, oil-sealing sleeve 2 interference fit are enclosed within on the main shaft 1, the gland end face is "T"-shaped flinger ring 5 through the cross section and decide square ring 6 and compress sealing, flinger ring 5 and main shaft 1 Spielpassung, aperture mazy type flinger ring 3 is tightly connected with dish-shaped oil-sealing sleeve 2 in the gland, dish oil-sealing sleeve 2 and main shaft 1 interference fit, the cross section is that "T"-shaped flinger ring 5 is divided into inner chamber 11 and exocoel 111 with the cavity between gland and bearing, end cap is provided with the oilhole 10 that connects exocoel, casing is provided with the oilhole 101 that feeds in the casing, and oilhole 10 and oilhole 101 form the loop.
Under the working state, lubricant oil in the casing 9 or working medium leak out to the cavity of 8 on gland 4 and bearing through bearing 8, the cross section is that "T"-shaped flinger ring 5 intercepts a large amount of lubricant oil or working medium in inner chamber 11, through the cross section flinger ring 5 and axle sleeve 7 gaps inflow exocoel 111 of T-shape through lubricant oil or working medium on a small quantity, be pressed on gland 4 on the casing 9 and be enclosed within through mazy type flinger ring 3 and interference fit and will be sealed in fully in the inner chamber 111 through lubricant oil or working medium on a small quantity after dish-shaped oil-sealing sleeve 2 on the main shaft 1 is tightly connected, realized hermetically sealed; Centrifugal action when less amount of lubrication oil in the inner chamber 111 or working medium are rotated by dish-shaped oil-sealing sleeve flows back to casing by the loop of oilhole 10,101, reduces the loss of lubricant oil or working medium, has reduced cost.
Conventional seals structure shown in Figure 2, outside framework oil seal 12 directly are placed in main shaft 1 cylindrical, and friction is easily generated heat and the oil sealing that weares and teares between outside framework oil seal 12 and the main shaft 1, causes seepage.
Claims (4)
1. non-seepage drive seal device, comprise main shaft (1), gland (4), bearing (8), casing (9), the main shaft that is with axle sleeve is bearing on the casing through bearing, gland passes main shaft and compresses casing, be provided with in the cavity between gland and bearing and decide square ring (6), be with oil-sealing sleeve (2) on the main shaft, it is characterized in that: described gland (4) end face is "T"-shaped flinger ring (5) through the cross section and decide square ring (6) and compress sealing, gland (4) interior aperture mazy type flinger ring (3) is tightly connected with oil-sealing sleeve (2), is provided with the loop between described gland (4) and casing (9).
2. according to the described non-seepage drive seal device of claim 1, it is characterized in that: described "T"-shaped flinger ring (5) and axle sleeve (7) Spielpassung.
3. according to the described non-seepage drive seal device of claim 1, it is characterized in that: described oil-sealing sleeve (2) is dish-shaped oil-sealing sleeve, dish-shaped oil-sealing sleeve and main shaft (1) interference fit.
4. according to the described non-seepage drive seal device of claim 1, it is characterized in that: described loop is included in and is drilled with oilhole (10) on the gland, is drilled with oilhole (101) on casing, and the gland upper oil hole is communicated with the formation loop with the casing upper oil hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102345947A CN101413588B (en) | 2008-11-24 | 2008-11-24 | Non-seepage drive seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102345947A CN101413588B (en) | 2008-11-24 | 2008-11-24 | Non-seepage drive seal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101413588A CN101413588A (en) | 2009-04-22 |
| CN101413588B true CN101413588B (en) | 2011-03-23 |
Family
ID=40594254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102345947A Active CN101413588B (en) | 2008-11-24 | 2008-11-24 | Non-seepage drive seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101413588B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878299A (en) * | 2012-10-19 | 2013-01-16 | 无锡京华重工装备制造有限公司 | Sealing structure of rotating main shaft |
| CN104197019B (en) * | 2014-08-15 | 2016-05-25 | 哈尔滨东安发动机（集团）有限公司 | Multi-sealing structure |
| CN106090240B (en) * | 2016-06-06 | 2018-04-17 | 广西柳工机械股份有限公司 | Labyrinth oil seal protective device |
| CN106224444A (en) * | 2016-08-30 | 2016-12-14 | 江苏泰隆减速机股份有限公司 | The reductor that a kind of jump ring, oil-sealing sleeve axially position |
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2008
- 2008-11-24 CN CN2008102345947A patent/CN101413588B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101413588A (en) | 2009-04-22 |
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